Fountain pen



B. W. HANLE Nov. l8, 1941.

FOUNTAIN PEN Filed Dec. 22, 1939 INVENTOR 96 m m m y ATTORNEY PatentedNov. 18, 1941 FOUNTAIN PEN Benjamin W. Hanle, New York, N. Y., assignorto Eagle Pencil Company, a corporation of Delaware Application December22, 1939, Serial No. 310,534

2 Claims.

The present invention relates to fountain pens of the lever operated sactype.

Among the objects of the invention are to provide a fountain pen inwhich the sac collapsing fountain pen filler means is of inexpensive andrugged construction, sure in operation and involves only a pair ofsimple stampings, readily installed in the barrel by a single thrust andinherently and securely accommodated and retained against displacementwith respect to the smooth inner wall of the barrel which is interruptedonly by the conventional longitudinal slot that accommodates the lever,all without the need for special attachment means or the peripheralgrooving and weakening of the barrel bore entailed with certainconventional fastening means.

In the accompanying drawing in which is shown one of various possibleembodiments of the several features of the invention,

Fig. 1 is a view in longitudinal cross-section through a pen involvingthe invention, and showing the lever in closed position,

Fig. 2 is a view similar to Fig. 1 showing the lever raised forcollapsing the sac in the filling operation,

Fig. 3 is a transverse sectional view taken on line 3--3 of Fig. 1,

Fig. 4 is a transverse sectional View taken on line 44 of Fig. 1,

Fig. 5 is a perspective view showing the correlation of the presser barand the lever, and

Fig. 6 is a greatly enlarged fragmentary side view of the operatinglever.

Referring now to the drawing, the pen includes the usual rubber sac Inthe forward end of which is mounted upon the section H which carries thefeed l2 and pen point |3 and which is securely lodged by friction orotherwise in the forward end of the substantially conventional barrell4. Within the barrel is the presser bar H: which may be of brass or ofspring steel, and comprises a sheet metal strip reversely curved at oneend It and retained under compression in conventional manner by theencircling wall of the barrel. The length of the presser bar extendslongitudinally between the outer wall of the sac ID and the inner wallof the barrel I4 and in substantial contact with the former. Preferablythe strip has a longitudinal embossed rib l1 thereon for enhancedstiffness.

The operating lever l8 is lodged within the longitudinal slot I9 in thebarrel and its forward end is pivoted to the presser bar. In theparticular construction shown, the lever arm comprises a unitarystamping including a face 20 and downturned lateral wings 2|, forchannelshaped cross-section. At the forward extremity of the lateralwings 2| are outturned bearing studs 22 preferably unitary and integralwith the lever, each desirably arched longitudinally at 23 for enhancedstiffness. The unitary bearing. studs 22 have a bearing mount inupturned cars 24 integral with the presser bar and suitably perforatedat 25 for the purpose. The lateral wings 2| of the lever arm also have apair of outturned fulcrum studs 26 in a unitary piece therewith whichpreferably are also arched longitudinally for stiffness.

In the position shown in Fig. 1, the face of the lever extends flushwith the outer Wall of the barrel in the slot l9 thereof. The downturnedwings 2| of the lever snugly engage the side walls of the slot l9, thepivot studs 22 extend transversely of the slot near the forwardextremity thereof and the fulcrum studs 26 are keyed under the sidewalls of the slot I9 as shown. Desirably the rear end 21 of the leverprotrudes beyond the wings 2| into a finger notch 28 in the barrel forfinger nail insertion to lift the lever for filling.

To assemble the construction, the lever is pivotally mounted on thepresser bar by inserting its pivot studs 22 into the bearingperforations 25. The assembly in the pen barrel may readily andinstantly be effected by hand, but preferably by resort to a simple jig.By a simple thrust upon the filler assembly the same is moved rearwardinto the barrel until the face 2|! of the lever comes into registry withthe slot I9, when the resiliency of the presser bar l5 causes said leverto snap or click into place. The filler mechanism. is thereby securelyretained in position, the end walls of slot l9 by their coaction withthe ends of the lever wings 2| locking the filler assembly againstlongitudinal displacement in the casing. The fulcrum studs 26 on thelever are urged by the pressure of the presser bar l5 against the innerwall of the barrel and thereby retain the lever securely in its slot l9.

In raising the lever from the position of Fig. 1 to that of Fig. 2, forthe purpose of filling, the studs 26 act as a sliding fulcrum. Theyslide along the length of the slot [9 while the pivot 22 of the leverrocks in bearing ears 24 in the presser bar, thereby to compress sac IDas shown in Fig. 2.

The lever is readily returned to closed position and after passing deadcenter it is snapped completely closed by the return of the resilientpresser bar to the position shown in Fig. 1.

Thus, the filling assembly is of utmost simplicity, comprising only twometal stampings which are correlated for one to pivot on the other,Without the need for any pivot pins or hearing elements apart from therespective unitary stampings. The assembly in the barrel is effected byone simple thrust and no further manipulation is required for securityof attachment, nor is any peripheral groove or the like required in thebore of the barrel which might add to the cost of production and detractfrom its mechanical strength. The construction by virtue of itssimplicity is secure and not subject to derangement by jamming orotherwise.

As many changes could be made in the above construction and manyapparently widely different embodiments of this invention could be madewithout departing from the scope of the claims, it is intended that allmatter contained in the above description or shown in the accompanyingdrawing shall be interpreted as illustrative and not in a limitingsense.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A filler assembly for a fountain pen comprising a resilient presserbar having lateral upstanding bearing ears with aligned perforations, acoacting operating lever of channel bar stock, the forward edges of saidchannels having outturned pivot studs arched for stiffness thereof andcoacting with the perforations in said bearing ears for pivotal mounttherein, the edges of said channel bar stock having a further pair ofoutturned studs integral therewith and between the ends thereof andarched for stiffness thereof to serve as a sliding fulcrum for the leverwhen installed.

2. As an article of manufacture a filling lever for a fountain pen, saidlever comprising a unitary piece of sheet metal having down-turnedlateral wings, said wings at one end thereof having outturned pivotstuds arched for stiffness thereof and having similar lateral studsbetween the ends thereof serving as a sliding fulcrum, the face of saidlever projecting at the end opposite said pivot end beyond the lateralwings thereof for finger nail engagement thereof.

BENJAMIN W. HANLE.

